From d77b72be836887ade992cdc52ed1b78092754725 Mon Sep 17 00:00:00 2001
From: Sven Slootweg <jamsoftgamedev@gmail.com>
Date: Mon, 17 Dec 2012 21:18:39 +0100
Subject: [PATCH] Check server availability using fsockopen before attempting
 to actually connect.

---
 frontend/classes/sshconnector.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/frontend/classes/sshconnector.php b/frontend/classes/sshconnector.php
index 0e46d3d..643e832 100644
--- a/frontend/classes/sshconnector.php
+++ b/frontend/classes/sshconnector.php
@@ -78,7 +78,14 @@ class SshConnector extends CPHPBaseClass
 	
 	public function Connect()
 	{
-		/* TODO: Use fsockopen with a timeout to determine if the node and SSHd are reachable before attempting to connect. */
+		$fp = @fsockopen($this->host, $this->port, $errno, $errstr, 3);
+
+		if(!$fp)
+		{
+			throw new SshConnectException("Could not connect to {$this->host}:{$this->port}: {$errstr}");
+		}
+		
+		fclose($fp);
 		
 		$options = array(
 			'hostkey' => $this->keytype